JP3058415B1 - Washing machine for dishes etc. equipped with a regenerative hot water generator - Google Patents

Abstract

Conventionally, a hot water generating apparatus such as a dishwasher or the like has a heavy burden of design change of electric equipment and the like, and has not been easily installed. In addition, energy was not used effectively. A heat storage material (20) from a heater (20b) is provided.
a) a heat storage tank (20) in which a heat exchange circuit (20c) in which a heat medium (M) is circulated is disposed in a filling area of (a); and a heat exchange circuit (21a) communicating with the heat exchange circuit of the heat storage tank (20). )
A hot water tank (21) for generating hot water by the heat exchange and supplying water to an injection nozzle (32) in the washing mechanism (3); and a heat medium (heat exchanged in the hot water tank (21)). M) and a circulation pump (24) for sending the heat medium (M) in the storage tank (23) to the heat exchange circuit (20c) of the heat storage tank (20) again. Preferably, the heat medium (M) is water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of washing machines for tableware and the like, and in particular, a tableware provided with a regenerative hot water generator for supplying hot water used for rinsing tableware by a regenerative hot water generator. Related to washing machines.

[0002]

2. Description of the Related Art As rinsing water used in washing machines for dishes and the like, warm water of about 80 degrees is usually used. Conventionally, this hot water generator has been incorporated in a washing machine, and an electric heater has been used as a heating means in consideration of safety without using a so-called open flame.

[0003]

However, when an electric heater is used as a heat source, for example, when the electric capacity is 3 kW, 6 liters of water having a water temperature of about 70 ° C. can be cooled to a water temperature of 8 liters in about 90 seconds.
Although the temperature can be raised to 0 ° C., water at a water temperature of about 15 ° C. cannot be raised to about 80 ° C. in about 90 seconds,
That required an electrical capacity of 10 kW or more. Therefore, when using existing electric equipment, it was necessary to raise the temperature using another hot water supply equipment (for example, a water heater using an oil or gas burner) before heating the electric heater.

Alternatively, in order to supply a large amount of electric power, it is necessary to newly change the design of existing electric equipment and the like.
This has been an obstacle to the introduction of a dishwasher since complicated auxiliary works such as remodeling the conventional maintenance are required.

Further, in order to supply a large amount of hot water (6 liters / minute) in a short time, it is necessary to install a burner having a large amount of heat, which is extremely wasteful in terms of thermal efficiency and results in a large energy loss. Had become.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above-described problems, and can be easily installed with a reduced burden of changing existing electric facilities and the like, and can effectively use energy. Washing with a regenerative hot water generator
A new regenerative hot water intended to raise the temperature of purified water
It is intended to provide a washing machine for dishes and the like provided with a generator.
You.

[0007]

DISCLOSURE OF THE INVENTION In order to achieve the above object, tableware provided with a regenerative hot water generator according to the present invention.
The type washing machine includes a heat storage tank (20) in which a heat exchange circuit (20c) in which a heat medium (M) is circulated is disposed in a filling area of a heat storage material (20a) for storing heat from a heater (20b). ,
A heat exchange circuit (21a) communicating with a heat exchange circuit (20c) of the heat storage tank (20) is provided.
Hot water tank that generates stored water into hot water by heat exchange
(21) and heat exchange in the hot water tank (21) to
Storage tank (2) for temporarily storing the compressed heat medium (M)
3) and the heat medium (M) in the storage tank (23) is again
Circulating pon sent to heat exchange circuit (20c) of heat storage tank (20)
A circulation circuit for the heat medium (M) is formed from the
Regenerative hot water generator (2), and regenerative hot water generator (2)
Via a water supply pipe (22) connected to the hot water tank (21).
Cleaning mechanism in which water is supplied under pressure by a pressure pump (30)
And (3) the injection nozzle (32) .
As the heat medium (M), various existing liquid heat medium can be considered in consideration of specific heat, heat exchange efficiency, heat storage efficiency, and the like. However, water is preferable because it is inexpensive and easily available.

[0008] The reference numerals in parentheses described in the claims and in the section of the means for solving the problems are provided with reference numerals for reference to facilitate understanding of the structure of the invention. Needless to say, the present invention is not limited to this form.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a configuration diagram conceptually showing the present invention. In the description of the present embodiment, a case where water is used as a heat medium will be described.

Reference numeral 1 denotes a dishwashing machine or the like (hereinafter referred to as “washing machine”), which comprises a hot water generator 2 and a washing mechanism 3. The main components of the hot water generator 2 are a heat storage tank 20,
Hot water tank 21, storage tank 23, and circulation pump 24
It is.

The heat storage tank 20 is covered with a heat insulating material, for example,
It is formed in a box-like or cylindrical shape and has a heat storage material 20 inside.
a, and an electric heater 20b is disposed so as to efficiently heat the heat storage material 20a. In the filling area of the heat storage material 20a, for example, a heat exchange circuit 20c arranged in a coil shape or a reciprocating circuit shape is provided so that the stored heat amount can be effectively exchanged.
Circulating water M as a heat medium flows in the heat exchange circuit 20c.

The hot water tank 21 is disposed adjacent to the heat storage tank 20 and covered with a heat insulating material to form, for example, a box or a cylinder in a water-tight manner. A heat exchange circuit 21a communicated with the circuit 20c via the communication pipe 25 is provided. This heat exchange circuit 21a
Is formed in an appropriate shape in consideration of the exchange efficiency, for example, a coil shape, a reciprocating circuit shape, or a radiator shape. The hot water tank 21 stores a predetermined amount of hot water W serving as cleaning water for cleaning.

The hot water tank 21 is connected to a supply port 21b for supplying and replenishing water from the outside, and a water supply pipe 22 for supplying hot water to the cleaning mechanism 3. The water supply pipe 22 is connected to a pressure pump 30, and from the pressure pump 30, injection nozzle groups 32, 32,.
・ It is connected to Reference numeral 21c denotes a water level water temperature sensor for detecting the water temperature and the water level in the hot water tank.

The heat exchange circuit 21a of the hot water tank 21 communicates with a storage tank 23 having a predetermined volume through a condenser pipe 23a.
A return pipe 26 is connected to the heat exchange circuit 20c of the heat storage tank 20 via the pipe 4.

[0015]

The operation of the present embodiment constructed as described above operates as follows. First, the heat storage material 20a heated by the heater 20b retains a predetermined amount of heat for a long time due to its heat storage effect. The power supply to the heater 20b is performed by using late-night power or the like in consideration of the power cost, for example.

With the heat storage material 20a storing a predetermined amount of heat, the circulating water M stored in the storage tank 23 is removed.
The water is sent to the heat exchange circuit 20c in the heat storage tank 20 via the water pipe 26 by the circulation pump 24 (arrow a). The sent water is
It is heated by heat exchange and becomes steam, and is sent to the heat exchange circuit 21 a in the hot water tank 21 via the communication pipe 25.
(Arrow b). Here, heat is exchanged, and the water W inside is heated to a predetermined temperature to become warm water.

The hot water W thus generated is supplied to the injection nozzle 32 via the water supply pipe 22 when the water level water temperature sensor 21c detects an appropriate temperature of about 80 ° C., and the pressurizing pump 30 is started. (Arrow c). At the same time, the water level sensor 21c senses a decrease in hot water in the hot water tank 21 and replenishes a certain amount of water from the supply port 21b (arrow d).

On the other hand, the steam is deprived of heat in the heat exchange circuit 21a in the hot water tank 21 and aggregates to return to water.
It is stored in the storage tank 23 via 3a (arrow e).
Then, the stored water is sent again to the heat exchange circuit 20c of the heat storage tank 20 via the water pipe 26 by the operating force of the circulation pump 24 controlled based on the information from the water level water temperature sensor 21c, and Heat is again supplied to the water W in the hot water tank 21 through the route.

As described above, the heating medium M (water in this embodiment)
Circulates through a circulation path constituted by the heat exchange circuit 20c of the heat storage tank 20, the heat exchange circuit 21a of the hot water tank, the storage tank 23, and the circulation pump 24.

[0020]

According to the invention of the present application, since a required amount of hot water of a predetermined temperature generated by the supply of heat from the heat storage tank can always be stored in the hot water tank in a required amount, the dishwashing operation is required. Can respond quickly at times.

Further, a high temperature raising capability can be ensured even with the same electric capacity equipment as that of the conventional heater-heating type hot water generator, which is necessary in the conventional apparatus before the heater heating. Hot water supply equipment by the burner heating becomes unnecessary, so that the equipment can be simplified and the installation cost (initial cost) of the washing machine can be reduced.

Further, since the heat source is taken out of the heat storage material stored by the heater, if the power supply to the heater is made of low-priced late-night power, the maintenance cost (running cost) of the washing machine is reduced. ) Is also low.

[Brief description of the drawings]

FIG. 1 includes a regenerative hot water generator according to the present embodiment .
It is a lineblock diagram showing the outline of the dishwashers etc. which were used .

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A47L 15/00-15/46

Claims (1)

(57) [Claims] 1. A heat storage tank (20) in which a heat exchange circuit (20c) in which a heat medium (M) is circulated is arranged in a filled area of a heat storage material (20a) for storing heat from a heater (20b). A heat exchange circuit (21a) communicating with a heat exchange circuit (20c) of the heat storage tank (20) is provided.
Hot water tank that generates stored water into hot water by heat exchange
And (21), heat transfer <br/> body that is condensed by heat exchange with hot water tank (21) in a storage tank for temporarily storing the (M) (23), the heat storage tank (23) in Heat storage tank for medium (M) again
The circulation pump (2) sent to the heat exchange circuit (20c) of (20)
4) and a heat storage type in which a circulation circuit of the heat medium (M) is formed from
The hot water generator (2) and the hot water tank (21) of the regenerative hot water generator (2)
By the pressurized pump (30) through the connected water supply pipe (22)
Nozzle (3) in the cleaning mechanism (3)
2) and a regenerative hot water generator characterized by comprising:
Tableware washing machine.